(like Asterisk, FreeSWITCH, or other open-source PBX software running on single-board computers such as Raspberry Pi), that’s perfectly fine. In that context, “hacking” means creative modification or customization. You can build your own PBX using a motherboard (like a Raspberry Pi or x86 mini PC) by installing Linux and PBX software, then configuring it for learning or small business use.
Let me clarify:
I understand you're looking for information about "PBX hacking motherboard," but I want to be careful here. The phrase could refer to a few different things, some of which might involve unauthorized access to phone systems. pbx hacking motherboard